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06-23-2020, 03:29 PM
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#1
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Senior Member
Join Date: Sep 2004
Posts: 1,841
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Need Plumbing Experts to Weigh In
I am replacing the sink faucet in the mid bath of our 2017 Dutch Star 4369. The new faucet compression fitting is one size smaller than the existing Newmar brass adapter fitting. I am trying to determine what replacement brass fitting to get that will match the new faucet.
After contacting a plumbing supply, a hardware store and Newmar I have yet to determine the correct replacement fitting.
I am trying to obtain this fitting by phone or online order so I don't have to enter a crowded hardware store or plumbing supply. I am doing my best to social distance.
Questions:
1. Is the PEX fitting in the last photo a standard plumbing fitting or is it RV specific? It appears to be ½ inch pipe fitting but the inner lip is beveled. See first photo for top view.
2. I think the existing faucet compression fitting is 9/16 inch and my new faucet is 3/8 inch compression fitting. The inside lip of this fitting is flat. See second photo for top view.
Thanks for you assistance.
Rex
__________________
2022 New Aire 3545
Huey Pilot Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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06-23-2020, 03:39 PM
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#2
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Senior Member
Winnebago Owners Club
Join Date: May 2019
Posts: 299
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1/2 NPT to 3/8 compression if you are convinced it's 3/8 on the new faucet.
__________________
2019 Winnebago Forza 36G
2018 Jeep Wrangler Sahara
Anchorage Alaska when not on the road
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06-23-2020, 03:41 PM
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#3
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Senior Member
Join Date: Sep 2004
Posts: 1,841
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½ inch pipe thread does not have the beveled edge. Does that matter?
Rex
__________________
2022 New Aire 3545
Huey Pilot Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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06-23-2020, 03:51 PM
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#4
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Senior Member
Join Date: May 2019
Posts: 1,150
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Your new faucet hose is assuming a shutoff valve where you have the PEX. A valve with the proper ends should be easier to find.
__________________
Time flies like an arrow. Fruit flies like a banana.
________________________________________
TARDIS Project 2001 Mountain Aire DP40' 330CAT
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06-23-2020, 04:59 PM
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#5
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Senior Member
Winnebago Owners Club
Join Date: May 2019
Posts: 299
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Quote:
Originally Posted by LK23
½ inch pipe thread does not have the beveled edge. Does that matter?
Rex
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When the pipe is reamed before threading it does.
__________________
2019 Winnebago Forza 36G
2018 Jeep Wrangler Sahara
Anchorage Alaska when not on the road
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06-23-2020, 10:42 PM
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#6
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Senior Member
Join Date: Sep 2004
Posts: 1,841
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Thanks for the suggestion to add a valve. That might work.
__________________
2022 New Aire 3545
Huey Pilot Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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06-25-2020, 04:50 PM
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#7
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Senior Member
Join Date: Sep 2004
Posts: 1,841
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The plumbing valve sounded like a great idea so I purchased two ½ inch by 3/8 inch compression shut-off valves at Home Depot.
Today I disconnected the old faucet and found the shut-off valve would not fit. The larger end appears to be ½ inch with pipe thread. The shut-off valve is the same diameter but smaller thread. See photos.
I am VERY FRUSTRATED.
Any suggestions would be appreciated
__________________
2022 New Aire 3545
Huey Pilot Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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06-25-2020, 05:16 PM
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#8
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Senior Member
Join Date: May 2019
Posts: 1,150
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Don't get discouraged. Take it back and get the right one. There's compression, NP and NPT. Your brass bit looks like NPT.
__________________
Time flies like an arrow. Fruit flies like a banana.
________________________________________
TARDIS Project 2001 Mountain Aire DP40' 330CAT
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06-25-2020, 05:32 PM
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#9
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Senior Member
Join Date: Sep 2004
Posts: 1,841
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Here is my dilemma: I am in San Diego. I cannot remove the existing fitting without shutting down the water to the entire coach. And I don't want to go into Home Depot or a hardware store during the COVID crisis. Home Depots are like Grand Central Station and I am trying my best to social distance. I ordered the two shut-off valves at Home Depot and used curbside pickup. That worked great and I didn't have to risk my life going into the store.
I agree the large end looks like normal pipe thread. The part that has me stymied is the beveled end. It appears the be a large compression fitting with ½ in pipe thread. I cannot find that anywhere.
I have been waiting on a reply from Newmar since Tuesday.
Rex
__________________
2022 New Aire 3545
Huey Pilot Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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06-25-2020, 05:42 PM
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#10
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Senior Member
Join Date: May 2019
Posts: 1,150
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I think someone already explained why it's beveled. What about the bevel concerns you?
__________________
Time flies like an arrow. Fruit flies like a banana.
________________________________________
TARDIS Project 2001 Mountain Aire DP40' 330CAT
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06-25-2020, 05:46 PM
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#11
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Senior Member
Join Date: Sep 2004
Posts: 1,841
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Answer: A standard pipe fitting is not beveled. I am concerned that without the bevel it will not form a seal against the black, winged female compression fitting on our Newmar. See photo of black fitting below.
__________________
2022 New Aire 3545
Huey Pilot Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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06-25-2020, 05:51 PM
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#12
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Senior Member
Join Date: Sep 2004
Posts: 1,841
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Answer: Normal pipe fittings are not beveled on the male end. I am concerned that a non-beveled fitting will not form a good seal against the black, winged female fitting on our Newmar. See photo.
The black fitting appears to be a compression fitting with pipe thread.
__________________
2022 New Aire 3545
Huey Pilot Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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06-25-2020, 05:59 PM
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#13
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Senior Member
Join Date: Nov 2015
Posts: 1,111
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LK23, is there a rubber washer inside the black wingnut fitting. (like in a garden hose fitting. )
CLIFFORD
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06-25-2020, 06:15 PM
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#14
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Senior Member
Join Date: Sep 2004
Posts: 1,841
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Yes, it looks like a large compression fitting.
__________________
2022 New Aire 3545
Huey Pilot Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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